Obviously Aggron's main problem isn't his inability to switch in, to the contrary he's actually very good at that if he has SS support. The problem is, a lot of Pokemon are going to be outspeeding him clobbering him for fatal damage on the following turn. With that in mind, here's some musings of how he does at switching into and launching an attack at the top 20 pokemon.
1. Scizor = Life Orb sets are going to outspeed and OHKO provided they're using a Fighting attack (Brick Break can't always assure the KO though). Choice Band sets are often going to be U-turning to a counter but if they're locked into Pursuit or Bullet Punch Aggron is good to go (Choice Band BP still does a respectable 35% on avg to a 80/0 Aggron so don't be too lax about throwing him into BPs).
2. Salamence = A worrying 80% of Salamence pack Earthquake which will tidily OHKO Aggron. Outrage is a fantastic opportunity for Aggron to do his thing though - even a max atk +1 LO Outrage only manages about 45% on avg to 80/0 Aggron. It's always useful to have something that can take such a common and dangerous attack so well.
3. Heatran = If he's Scarfed and using a weak resisted attack, then sure. But even with sand support, Fire Blast is easily 2HKOing 80/0 Aggron.
4. Gyarados = Heck no.
5. Latias = Not bad here, but 319 SpA Life Orb Surf does 88% on avg to 80/0 Aggron even with Sand. LO DM does 47% on average so if you come in on that, you'll take 43% on avg from a -2 Surf. If you play with caution, you have a reasonable matchup here.
6. Tyranitar = Choice Band variants are a godsend for Aggron if they're not using Earthquake or Aqua Tail (and Tyranitar tends not to use those moves as often as his others). Even the dreaded Choice Band Stone Edge does 29% on avg to a 80/0 Aggron. Dragon Dance versions aren't too bad either as a lot of them are now going for the DD/Crunch/Stone Edge/Fire Punch set up. 41% of Tyranitar ran EQ last month.
7. Metagross = Another powerful Earthquaker so probably best to stay clear. Aggron's CB EQ only manages 75% on avg to a 252/16 Metagross so even if you outspeed you're still outta luck.
8. Lucario = :doom:
9. Infernape = :happybrain:
10. Jirachi = Quite good here. Calm Mind versions can't do enough to Aggron in sand unless they use HP Ground. Physical versions have the potential to flinch him to death (328 Iron Head does 25% on avg to 80/Aggron)
11. Gengar = Switches in very well on Scarfed versions and only has to fear the 70% accurate Focus Blast. Not a smart idea but I suppose in a pinch you could try your luck.
12. Swampert = Nope.
13. Blissey = Great stuff. Obviously RP versions don't want Thunder Wave but Blissey is good news for Aggron.
14. Azelf = Aggron can absorb his Explosion for you which is always useful and takes his other attacks quite well if he has Sand. Not a bad matchup here, shame he's nearly always a lead.
15. Starmie = Nah.
16. Rotom-h = If he's scarfed and using Shadow Ball. Otherwise you're risking a WoW. TBolt is tolerable if you have sand but can still 2HKO from max SpA versions.
17. Gliscor = No.
18. Vaporeon = No for the mostpart but if you can get in on an attack that isn't Surf, you can deal 85% on avg to a 188/252+ Vaporeon which can OHKO after a little residual damage and might be enough to force your opponent to switch if he wants to keep his Vappy healthy to stop a Gyarados/Infernape at a later stage.
19. Magnezone = TBolt and Flash Cannon 2HKOs even in sand but you've got a shot if you get in on something else. Shit outta luck if he Magnet Rises though.
20. Zapdos = Yes if you have Sand and don't come in on Tbolt, don't even attempt it otherwise.
For additional reading, Lemmiwinks posted a similar assessment in the other thread (with a focus on Aggron vs Rhyperior) a few days ago so here it is:
So for all the people singing Aggron's OU praises what are you coming on on really? It just seems to me that (admittedley having done zero testing) that Aggron is just going to be one of those quirky UUs who might be fun and maybe even able to hold his own in OU to an extent but is ultimately never going to find his way into the 'better' teams.
1. Scizor = Life Orb sets are going to outspeed and OHKO provided they're using a Fighting attack (Brick Break can't always assure the KO though). Choice Band sets are often going to be U-turning to a counter but if they're locked into Pursuit or Bullet Punch Aggron is good to go (Choice Band BP still does a respectable 35% on avg to a 80/0 Aggron so don't be too lax about throwing him into BPs).
2. Salamence = A worrying 80% of Salamence pack Earthquake which will tidily OHKO Aggron. Outrage is a fantastic opportunity for Aggron to do his thing though - even a max atk +1 LO Outrage only manages about 45% on avg to 80/0 Aggron. It's always useful to have something that can take such a common and dangerous attack so well.
3. Heatran = If he's Scarfed and using a weak resisted attack, then sure. But even with sand support, Fire Blast is easily 2HKOing 80/0 Aggron.
4. Gyarados = Heck no.
5. Latias = Not bad here, but 319 SpA Life Orb Surf does 88% on avg to 80/0 Aggron even with Sand. LO DM does 47% on average so if you come in on that, you'll take 43% on avg from a -2 Surf. If you play with caution, you have a reasonable matchup here.
6. Tyranitar = Choice Band variants are a godsend for Aggron if they're not using Earthquake or Aqua Tail (and Tyranitar tends not to use those moves as often as his others). Even the dreaded Choice Band Stone Edge does 29% on avg to a 80/0 Aggron. Dragon Dance versions aren't too bad either as a lot of them are now going for the DD/Crunch/Stone Edge/Fire Punch set up. 41% of Tyranitar ran EQ last month.
7. Metagross = Another powerful Earthquaker so probably best to stay clear. Aggron's CB EQ only manages 75% on avg to a 252/16 Metagross so even if you outspeed you're still outta luck.
8. Lucario = :doom:
9. Infernape = :happybrain:
10. Jirachi = Quite good here. Calm Mind versions can't do enough to Aggron in sand unless they use HP Ground. Physical versions have the potential to flinch him to death (328 Iron Head does 25% on avg to 80/Aggron)
11. Gengar = Switches in very well on Scarfed versions and only has to fear the 70% accurate Focus Blast. Not a smart idea but I suppose in a pinch you could try your luck.
12. Swampert = Nope.
13. Blissey = Great stuff. Obviously RP versions don't want Thunder Wave but Blissey is good news for Aggron.
14. Azelf = Aggron can absorb his Explosion for you which is always useful and takes his other attacks quite well if he has Sand. Not a bad matchup here, shame he's nearly always a lead.
15. Starmie = Nah.
16. Rotom-h = If he's scarfed and using Shadow Ball. Otherwise you're risking a WoW. TBolt is tolerable if you have sand but can still 2HKO from max SpA versions.
17. Gliscor = No.
18. Vaporeon = No for the mostpart but if you can get in on an attack that isn't Surf, you can deal 85% on avg to a 188/252+ Vaporeon which can OHKO after a little residual damage and might be enough to force your opponent to switch if he wants to keep his Vappy healthy to stop a Gyarados/Infernape at a later stage.
19. Magnezone = TBolt and Flash Cannon 2HKOs even in sand but you've got a shot if you get in on something else. Shit outta luck if he Magnet Rises though.
20. Zapdos = Yes if you have Sand and don't come in on Tbolt, don't even attempt it otherwise.
For additional reading, Lemmiwinks posted a similar assessment in the other thread (with a focus on Aggron vs Rhyperior) a few days ago so here it is:
Lemmiwinks MkII said:I see where you're coming from with the greater number of resistances, although you glaringly forgot Rhyperior's Electric immunity. But IMO resistances by themselves aren't the important thing, but how well you can apply those resistances to the metagame. On tha note, I had a sudden interest in examining their usefulness in this regard head to head. Here is the top 30 according to last month's statistics (tl;dr warning):
Scizor - I’d say Aggron, due to the fact that Scizor is often hit-and-run with CB U-turn, and Aggron’s resistance helps in that regard. Takes less from Bullet Punch too. But also dies 1 on 1 to Superpower and is more vulnerable to trapping after U-turn, but those are more situational so I’ll give it the benefit of the doubt here.
Salamence - I’d say Rhyperior edges this, just because it is capable of switching in on the Dragon Dance variant and beating it. Almost all Salamence carry Earthquake, so that rules out Aggron as a good match-up right there. Aggron does revenge-kill it better when stuck on Outrage, but there are better Pokemon for that (^^^) that are already on just about any OU team anyway.
Heatran - Rhyperior easily.
Gyarados - Neither like facing it, but Aggron wins for the fact that it takes Waterfall better, which will always be used where Earthquake may not (such as on ResTalk or Taunt sets). Always dies to Earthquake variants, but Rhyperior never fares any better.
Rotom-A - Rhyperior wins here. Being immune to Thunderbolt is much more important than resisting the weaker Shadow Ball. Also takes Overheat better, which is much more common than Leaf Storm versions. Neither like WoW, so that’s a moot point.
Latias - I’ll give this to Aggron, as it can take Dragon Pulses and Draco Meteors a little better than Rhyperior, and therefore edges it. Both hate Surf.
Tyranitar - Rhyperior. Although Aggron resists both STABs, it is obliterated by boosted Earthquakes whereas Rhyperior can take the odd hit, and both hate Aqua Tail. Rhyperior also fares better against Dragon Dance variants and the occasional Boah.
Metagross - despite the Steel weakness, I say Rhyperior wins here. Rhyperior has even bulk to take any hit and KO back with Earthquake, whereas Aggron is KO’d by Earthquake (Meta’s most common move) and can’t come close to KOing back.
Lucario - Rhyperior again, because it can take an unboosted Close Combat whilst Aggron obviously can’t. The Rock Polish variant is also far less prne to revenge-kills from Vacuum Wave.
Infernape - Both are easily KO’d by most Infernape, but as with Lucario, Rhyperior edges it for being less prone to revenge-kills as a Rock Polisher.
Jirachi - Aggron wins here, despite lacking a STAB move to hit it effectively. Takes less from Iron Head, so less prone to being flinched to death, and takes Psychics and Grass Knots better from special variants.
Gengar - Rhyperior wins here despite not resisting Ghost. Focus Blast will annihilate Aggron, but Rhyperior can comfortably take a hit or two with suitable investment. Energy Ball is much rarer, and doesn’t OHKO anyway.
Swampert - neither like taking it on, but Rhyperior fares better because of STAB Earthquake that does much more damage, and can 2HKO with Choice Band.
Blissey - depends on the set and which status is most crippling. Aggron is immune to Toxic, whilst Rhyperior is immune to Thunder Wave. So I suppose that Rhyperior is better for Rock Polish, whilst Aggron is better for slow hard-hitting sets. Rhyperior can make 101 HP Subs as well, but that’s a negligible difference. Not calling this one.
Azelf - Aggron wins this comfortably with Psychic resistance and neutrality to Grass Knot.
Starmie - both win and lose equally for just about all sets and situations. Only differences are that Aggron can outrun with a neutral nature after Rock Polish, whilst Rhyperior has the more reliable KOing move. Another stalemate.
Gliscor - Rhyperior easily. Aggron can’t take a STAB Earthquake, whilst Rhyperior can.
Vaporeon - both lose in equal measure for the most part, but Aggron edges it as Head Smash can OHKO with SR and Sandstorm damage.
Magnezone - Rhyperior, no need to explain why. Flash Cannon is not a factor here.
Zapdos - Yawn, Rhyperior.
Machamp - Rhyperior. Not OHKO’d by Dynamicpunch, and has STAB Earthquake.
Kingdra - Aggron can OHKO most variants with LO Head Smash, so wins this.
Breloom - Rhyperior. Both fare badly, but Rhyperior can hit it much harder, and has an easier time against those that lack Seed Bomb. Also less prone to revenge-kills for what it’s worth.
Skarmory - CB Aggron has an easier time outrunning and 2HKOing with superior speed, as some run enough to outpace Adamant Rhyperior but not base 50s. For non-choiced slow builds, Rhyperior can hit harder on Roosting turns with Earthquake, but I still think Aggron fares better here.
Bronzong - Aggron can 3HKO with Head Smash, but Rhyperior can 2HKO with Fire Punch, or even with Megahorn against less physically bulky spreads. Also much less prone to Earthquake, so Rhyperior wins here.
Celebi - easy win for Aggron.
Flygon - Rhyperior. See Salamence.
Suicune - Aggron’s Head Smash hits harder, so it edges this one.
Jolteon - Rhyperior of course.
Empoleon - Rhyperior wins for being able to OHKO any variant with Earthquake, although Aggron is slightly less prone to a revenge-kill from Aqua Jet. Only slightly though, as both can take it quite comfortably for the most part.
Rhyperior wins 18-10, with 2 ties, but this is just my opinion. I would do the next 20 in more detail too if I had the time, but on quick inspection I get the following results (not counting Rotom-c of course) in order:
Rhyperior, Rhyperior, Rhyperior, Rhyperior, Rhyperior, Rhyperior, Rhyperior, Rhyperior, stalemate, Aggron, stalemate, Rhyperior, Rhyperior, Aggron, Rhyperior, Rhyperior, Rhyperior, Rhyperior, Rhyperior, Aggron.
So Rhyperior wins 15-3 here, with two ties, though they obviously carry less weight than the top 30 when comparing their usefulness. I’m sure some of these will be controversial too, especially Weavile and Porygon-Z, but there you go.
So for all the people singing Aggron's OU praises what are you coming on on really? It just seems to me that (admittedley having done zero testing) that Aggron is just going to be one of those quirky UUs who might be fun and maybe even able to hold his own in OU to an extent but is ultimately never going to find his way into the 'better' teams.